CN105648580B - A kind of preparation method of absorbent cotton - Google Patents
A kind of preparation method of absorbent cotton Download PDFInfo
- Publication number
- CN105648580B CN105648580B CN201511030545.8A CN201511030545A CN105648580B CN 105648580 B CN105648580 B CN 105648580B CN 201511030545 A CN201511030545 A CN 201511030545A CN 105648580 B CN105648580 B CN 105648580B
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- CN
- China
- Prior art keywords
- cotton
- linter
- kiering
- cotton linter
- carding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229920000742 Cotton Polymers 0.000 title claims abstract description 137
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 41
- 239000000243 solution Substances 0.000 claims abstract description 34
- 238000009960 carding Methods 0.000 claims abstract description 21
- 238000005238 degreasing Methods 0.000 claims abstract description 19
- 239000003513 alkali Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000005554 pickling Methods 0.000 claims abstract description 13
- 238000009991 scouring Methods 0.000 claims abstract description 10
- 239000007844 bleaching agent Substances 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 14
- 238000004061 bleaching Methods 0.000 claims description 14
- 239000000428 dust Substances 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 10
- 238000004064 recycling Methods 0.000 claims description 7
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 230000002087 whitening effect Effects 0.000 claims description 6
- XCKMWFCDHOELIZ-UHFFFAOYSA-N [Ca].Cl(=O)(=O)O Chemical compound [Ca].Cl(=O)(=O)O XCKMWFCDHOELIZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 239000002585 base Substances 0.000 abstract description 2
- 239000012476 oxidizable substance Substances 0.000 abstract description 2
- 239000004094 surface-active agent Substances 0.000 abstract description 2
- 235000012343 cottonseed oil Nutrition 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical group [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000006040 Prunus persica var persica Nutrition 0.000 description 1
- 240000006413 Prunus persica var. persica Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- AEMOLEFTQBMNLQ-BKBMJHBISA-N alpha-D-galacturonic acid Chemical compound O[C@H]1O[C@H](C(O)=O)[C@H](O)[C@H](O)[C@H]1O AEMOLEFTQBMNLQ-BKBMJHBISA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 150000002402 hexoses Chemical class 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G9/00—Opening or cleaning fibres, e.g. scutching cotton
- D01G9/14—Details of machines or apparatus
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/02—Carding machines
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention discloses a kind of preparation method of absorbent cotton, comprise the following steps：(1) opener；(2) clean；(3) cotton carding；(4) degreasing：Cotton linter after cotton carding is placed in bucking kier, then addition concentration is the NaOH solution that 22 28g/L temperature are 70 DEG C, make alkali lye infiltrate through cotton carding after cotton linter in, then heat to more than 95 DEG C and start convection current, from being started convection current calculate, the 8h of kiering 7, it is 95 100 DEG C that kiering temperature is kept in scouring process, kiering terminate after by recycle of alkali liquor, hot water injection, cold water flush, drain；(5) bleach；(6) pickling；(7) wash；(8) dry.Absorbent cotton acid-base value, readily oxidizable substance, the biocompatibility index prepared all meet medical needs, and whiteness is up to more than 85 degree, and surface-active substance is no more than 2mm, and 10g absorbent cotton is in 20s, and water absorption is up to more than 23g.
Description
Technical field
The invention belongs to absorbent cotton production technical field, and in particular to a kind of preparation method of absorbent cotton.
Background technology
The main component of cotton fiber is alpha-cellulose, and typically by high, fiber length of maturity etc., matter is measured is referred to as cotton,
The outside 40% or so taken from cotton boll belongs to cotton；And by maturity is lower, fiber is relatively short, quality relative mistake
Some are referred to as cotton linter, i.e., residue 60% is cottonseed, one layer of short flannel cotton is enclose on cottonseed, cottonseed obtains cotton through mechanical stripping
Flower seed and cotton of short staple, cotton of short staple account for 20% or so of cotton total amount.They are referred to as cotton fiber, and the former is used for textile industry,
The latter is usually used in chemical industry.But cotton of short staple is that one kind contains more broken cotton seed hulls, broken cotton floral leaf, broken cotton peach shell, dust etc., no
Industry and life can be directly used in.In addition to some impurity that external energy is seen, cotton linter often contains various accompanying impurities, and these are miscellaneous
Matter belongs to the accompaniment of cellulose, is broadly divided into two major classes：One kind is polysaccharide and derivative, as pentosan, more contracting hexose,
Pectic substance and starch etc.；Another kind of is non-glucide, as lignin, resin or grease, wax, protein, inorganic salts and
A small amount of tannin, pigment etc., certain technical finesse means are had to pass through during use, can just be made after removing these accompanying impurities
With material after treatment turns into a kind of new material in physics and chemical property all there occurs great changes, and we will
It is referred to as absorbent cotton, is called purified cotton, cotton pulp pool etc..
The absorbent cotton absorbent time that traditional method is prepared is long and water absorption is few, has not met the demand of modern people,
In addition biocompatibility is bad, can not especially meet the needs of medical procedure.
The content of the invention
A kind of preparation method for absorbent cotton that the present invention provides for above-mentioned weak point, the present invention is using cotton linter as original
Material, is prepared into absorbent cotton, the preparation side by steps such as opener-removal of impurities-cotton carding-degreasing-bleaching-pickling-washing-dryings
Method is simple, and cost is low, and the liquids quality such as water that the absorbent cotton prepared absorbs in a short time is more, has saved the time, meets
The demand of contemporary people.
To achieve the above object, the technical solution adopted for the present invention to solve the technical problems is：
A kind of preparation method of absorbent cotton, comprises the following steps：
(1) opener：Fritter short flannel using opener by closely knit cotton linter shredding for nature diastole, in favor of follow-up
Processing；
(2) clean：Larger impurity on cotton linter after opener is removed, then cleared up its solid particle polluter with recycling machine
Totally, most its dust is removed totally through cyclone dust removal machine afterwards；
(3) cotton carding：Loose processing is carried out again to the cotton linter after removal of impurities, makes cotton piece thickness uniformity, every 1.5-
1.8kg, weight 15-18kg is often wrapped, must not exceed 18kg；
(4) degreasing：Cotton linter after cotton carding is placed in bucking kier, every pot of 850-1200kg, it is 22- then to add concentration
28g/L temperature is 70 DEG C of NaOH solution 8m3, make alkali lye infiltrate through cotton carding after cotton linter in, then heat to more than 95 DEG C
Start convection current, calculated from being started convection current, kiering 7-8h, it is 95-100 DEG C that kiering temperature is kept in scouring process, and kiering terminates
Afterwards by recycle of alkali liquor, hot water injection, cold water flush, drain；
(5) bleach：The cotton linter of degreasing is taken the dish out of the pot, is closely placed in Bellmer, concentration 2.0-2.8g/L
Calcium hypochlorite solution 8m3Material after degreasing to be bleached, the whitening cycle time is 4-5h, then reclaims bleaching liquid,
Clear water rinses, and drains；
(6) pickling：By 95% H2SO4It is diluted with water as 4-7g/L acid solutions, acid solution is filled into pond, the cotton after immersion bleaching
Short flannel, circulation time 2h, clear water rinse；
(7) wash：Cotton linter after pickling is cleaned with water, it is 7.0-7.5 to be washed till solution ph, is then dehydrated；
(8) dry：It will be dried after material exhibition cotton after washing dehydration, examine, packaging, obtain absorbent cotton.
Further, every 10min convection current 1-2 times in step (4) scouring process.
A kind of preparation method of absorbent cotton provided by the invention, has the advantages that：
(1) present invention passes through opener-removal of impurities-cotton carding-degreasing-bleaching-pickling-washing-drying etc. using cotton linter as raw material
Step is prepared into absorbent cotton, and the preparation method is simple, and cost is low, and the alkali lye, bleaching liquid, acid solution, water in preparation process are all
The dosage of alkali lye, bleaching liquid, acid solution, water can be reduced with recycling, while decrease the pollution to environment.
(2) the absorbent cotton quality prepared of the present invention is good, can meet pharmaceutical requirements, good biocompatibility, in a short time
It can absorb more liquid, efficiency high.
(3) every 10min convection current 1-2 times, this operation alkali lye can be made to permeate uniformly, completely in scouring process in skimming processes
Into cotton linter so that the various accompanying impurities in cotton linter remove well.
Embodiment
Embodiment 1
A kind of preparation method of absorbent cotton, comprises the following steps：
(1) opener：Fritter short flannel using opener by closely knit cotton linter shredding for nature diastole, in favor of follow-up
Processing；
(2) clean：Larger impurity on cotton linter after opener is removed, then cleared up its solid particle polluter with recycling machine
Totally, most its dust is removed totally through cyclone dust removal machine afterwards；
(3) cotton carding：Loose processing is carried out again to the cotton linter after removal of impurities, makes cotton piece thickness uniformity, every 1.5-
1.8kg, weight 15-18kg is often wrapped, must not exceed 18kg；
(4) degreasing：Cotton linter after cotton carding is placed in bucking kier, every pot of 850kg, it is 22g/L temperature then to add concentration
Spend the NaOH solution 8m for 70 DEG C3, make alkali lye infiltrate through cotton carding after cotton linter in, then heat to more than 95 DEG C and start pair
Stream, calculated from being started convection current, kiering 7-8h, it is 95-100 DEG C that kiering temperature is kept in scouring process, every 10min convection current 1-
2 times, kiering terminate after by recycle of alkali liquor, hot water injection, cold water flush, drain；
(5) bleach：The cotton linter of degreasing is taken the dish out of the pot, is closely placed in Bellmer, time that concentration is 2.0g/L
Chloric acid calcium solution 8m3Material after degreasing is bleached, the whitening cycle time is 4-5h, is then reclaimed bleaching liquid, clear water
Rinse, drain；
(6) pickling：By 95% H2SO4It is diluted with water as 4g/L acid solutions, acid solution is filled into pond, the cotton after immersion bleaching is short
Suede, circulation time 2h, clear water rinse；
(7) wash：Cotton linter after pickling is cleaned with water, it is 7.0-7.5 to be washed till solution ph, is then dehydrated；
(8) dry：It will be dried after material exhibition cotton after washing dehydration, examine, packaging, obtain absorbent cotton.
Embodiment 2
A kind of preparation method of absorbent cotton, comprises the following steps：
(1) opener：Fritter short flannel using opener by closely knit cotton linter shredding for nature diastole, in favor of follow-up
Processing；
(2) clean：Larger impurity on cotton linter after opener is removed, then cleared up its solid particle polluter with recycling machine
Totally, most its dust is removed totally through cyclone dust removal machine afterwards；
(3) cotton carding：Loose processing is carried out again to the cotton linter after removal of impurities, makes cotton piece thickness uniformity, every 1.5-
1.8kg, weight 15-18kg is often wrapped, must not exceed 18kg；
(4) degreasing：Cotton linter after cotton carding is placed in bucking kier, every pot of 1000kg, it is 25g/L temperature then to add concentration
Spend the NaOH solution 8m for 70 DEG C3, make alkali lye infiltrate through cotton carding after cotton linter in, then heat to more than 95 DEG C and start pair
Stream, calculated from being started convection current, kiering 7-8h, it is 95-100 DEG C that kiering temperature is kept in scouring process, every 10min convection current 1-
2 times, kiering terminate after by recycle of alkali liquor, hot water injection, cold water flush, drain；
(5) bleach：The cotton linter of degreasing is taken the dish out of the pot, is closely placed in Bellmer, time that concentration is 2.4g/L
Chloric acid calcium solution 8m3Material after degreasing is bleached, the whitening cycle time is 4-5h, is then reclaimed bleaching liquid, clear water
Rinse, drain；
(6) pickling：By 95% H2SO4It is diluted with water as 6g/L acid solutions, acid solution is filled into pond, the cotton after immersion bleaching is short
Suede, circulation time 2h, clear water rinse；
(7) wash：Cotton linter after pickling is cleaned with water, it is 7.0-7.5 to be washed till solution ph, is then dehydrated；
(8) dry：It will be dried after material exhibition cotton after washing dehydration, examine, packaging, obtain absorbent cotton.
Embodiment 3
A kind of preparation method of absorbent cotton, comprises the following steps：
(1) opener：Fritter short flannel using opener by closely knit cotton linter shredding for nature diastole, in favor of follow-up
Processing；
(2) clean：Larger impurity on cotton linter after opener is removed, then cleared up its solid particle polluter with recycling machine
Totally, most its dust is removed totally through cyclone dust removal machine afterwards；
(3) cotton carding：Loose processing is carried out again to the cotton linter after removal of impurities, makes cotton piece thickness uniformity, every 1.5-
1.8kg, weight 15-18kg is often wrapped, must not exceed 18kg；
(4) degreasing：Cotton linter after cotton carding is placed in bucking kier, every pot of 1200kg, it is 28g/L temperature then to add concentration
Spend the NaOH solution 8m for 70 DEG C3, make alkali lye infiltrate through cotton carding after cotton linter in, then heat to more than 95 DEG C and start pair
Stream, calculated from being started convection current, kiering 7-8h, it is 95-100 DEG C that kiering temperature is kept in scouring process, every 10min convection current 1-
2 times, kiering terminate after by recycle of alkali liquor, hot water injection, cold water flush, drain；
(5) bleach：The cotton linter of degreasing is taken the dish out of the pot, is closely placed in Bellmer, time that concentration is 2.8g/L
Chloric acid calcium solution 8m3Material after degreasing is bleached, the whitening cycle time is 4-5h, is then reclaimed bleaching liquid, clear water
Rinse, drain；
(6) pickling：By 95% H2SO4It is diluted with water as 7g/L acid solutions, acid solution is filled into pond, the cotton after immersion bleaching is short
Suede, circulation time 2h, clear water rinse；
(7) wash：Cotton linter after pickling is cleaned with water, it is 7.0-7.5 to be washed till solution ph, is then dehydrated；
(8) dry：It will be dried after material exhibition cotton after washing dehydration, examine, packaging, obtain absorbent cotton.
Embodiment 4
A kind of preparation method of absorbent cotton, comprises the following steps：
(1) opener：Fritter short flannel using opener by closely knit cotton linter shredding for nature diastole, in favor of follow-up
Processing；
(2) clean：Larger impurity on cotton linter after opener is removed, then cleared up its solid particle polluter with recycling machine
Totally, most its dust is removed totally through cyclone dust removal machine afterwards；
(3) cotton carding：Loose processing is carried out again to the cotton linter after removal of impurities, makes cotton piece thickness uniformity, every 1.5-
1.8kg, weight 15-18kg is often wrapped, must not exceed 18kg；
(4) degreasing：Cotton linter after cotton carding is placed in bucking kier, every pot of 1100kg, it is 26g/L temperature then to add concentration
Spend the NaOH solution 8m for 70 DEG C3, make alkali lye infiltrate through cotton carding after cotton linter in, then heat to more than 95 DEG C and start pair
Stream, calculated from being started convection current, kiering 7-8h, it is 95-100 DEG C that kiering temperature is kept in scouring process, every 10min convection current 1-
2 times, kiering terminate after by recycle of alkali liquor, hot water injection, cold water flush, drain；
(5) bleach：The cotton linter of degreasing is taken the dish out of the pot, is closely placed in Bellmer, time that concentration is 2.6g/L
Chloric acid calcium solution 8m3Material after degreasing is bleached, the whitening cycle time is 4-5h, is then reclaimed bleaching liquid, clear water
Rinse, drain；
(6) pickling：By 95% H2SO4It is diluted with water as 6g/L acid solutions, acid solution is filled into pond, the cotton after immersion bleaching is short
Suede, circulation time 2h, clear water rinse；
(7) wash：Cotton linter after pickling is cleaned with water, it is 7.0-7.5 to be washed till solution ph, is then dehydrated；
(8) dry：It will be dried after material exhibition cotton after washing dehydration, examine, packaging, obtain absorbent cotton.
Absorbent cotton acid-base value that the present invention prepares, readily oxidizable substance, biocompatibility index all meet medical needs, whiteness
Up to more than 85 degree, surface-active substance is no more than 2mm, and 10g absorbent cotton is in 20s, and water absorption is up to more than 23g.
Claims (2)
1. a kind of preparation method of absorbent cotton, it is characterised in that comprise the following steps：
(1) opener：Fritter short flannel using opener by closely knit cotton linter shredding for nature diastole；
(2) clean：Larger impurity on cotton linter after opener is removed, then its solid particle polluter is cleared up with recycling machine and done
Only, most its dust is removed totally through cyclone dust removal machine afterwards；
(3) cotton carding：Loose processing is carried out again to the cotton linter after removal of impurities, makes cotton piece thickness uniformity, every 1.5-
1.8kg, often wrap weight 15-18kg；
(4) degreasing：Cotton linter after cotton carding is placed in bucking kier, every pot of 850-1200kg, it is 22-28g/ then to add concentration
L temperature is 70 DEG C of NaOH solution 8m3, make alkali lye infiltrate through cotton carding after cotton linter in, then heat to more than 95 DEG C and start
Convection current, calculated from being started convection current, kiering 7-8h, it is 95-100 DEG C that kiering temperature is kept in scouring process, and kiering will after terminating
Recycle of alkali liquor, hot water injection, cold water flush, drain；
(5) bleach：The cotton linter of degreasing is taken the dish out of the pot, is closely placed in Bellmer, time that concentration is 2.0-2.8g/L
Chloric acid calcium solution 8m3Material after degreasing is bleached, the whitening cycle time is 4-5h, is then reclaimed bleaching liquid, clear water
Rinse, drain；
(6) pickling：By 95% H2SO4It is diluted with water as 4-7g/L acid solutions, acid solution is filled into pond, the cotton linter after immersion bleaching,
Circulation time is 2h, and clear water rinses；
(7) wash：Cotton linter after pickling is cleaned with water, it is 7.0-7.5 to be washed till solution ph, is then dehydrated；
(8) dry：It will be dried after material exhibition cotton after washing dehydration, examine, packaging, obtain absorbent cotton.
2. the preparation method of a kind of absorbent cotton according to claim 1, it is characterised in that every in step (4) scouring process
Every 10min convection current 1-2 times.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511030545.8A CN105648580B (en) | 2015-12-30 | 2015-12-30 | A kind of preparation method of absorbent cotton |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511030545.8A CN105648580B (en) | 2015-12-30 | 2015-12-30 | A kind of preparation method of absorbent cotton |
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| CN105648580A CN105648580A (en) | 2016-06-08 |
| CN105648580B true CN105648580B (en) | 2017-11-10 |
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| CN109338536A (en) * | 2018-09-20 | 2019-02-15 | 郑贤超 | The processing method of organic cotton cord as electronic cigarette drain item |
| CN110079934A (en) * | 2019-06-03 | 2019-08-02 | 湖南瑞亚高科集团有限公司 | A kind of medical non-woven cloth |
| CN112267207A (en) * | 2020-10-26 | 2021-01-26 | 湖北欣柔卫生用品股份有限公司 | Production method of front-bleaching high-speed high-yield all-cotton spunlaced non-woven fabric |
| CN112239901B (en) * | 2020-10-27 | 2021-08-27 | 王子乐 | Production device of medical absorbent cotton |
| JP2022128926A (en) * | 2021-02-24 | 2022-09-05 | 日本蚕毛染色株式会社 | Modified cotton, cotton yarn and textile product comprising the same, and method for producing modified cotton |
| CN113969426A (en) * | 2021-11-09 | 2022-01-25 | 鄢陵乐慧实业有限公司 | Manufacturing method of absorbent kapok |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003125840A (en) * | 2001-10-23 | 2003-05-07 | Kakui Kk | Makeup cotton |
| CN101619548A (en) * | 2008-06-30 | 2010-01-06 | 周光 | Boiling method for spherical boiler |
| CN101608379B (en) * | 2009-07-13 | 2011-01-12 | 云南光电辅料有限公司 | Process for preparing high-grade absorbent cotton for optical instruments |
| CN101638810B (en) * | 2009-08-20 | 2013-04-03 | 襄樊源力生物科技有限公司 | Method for high effective environmental pollution energy conservation purified cotton production |
| CN102251422B (en) * | 2011-05-30 | 2013-01-09 | 四川北方硝化棉股份有限公司 | Method for producing ultrahigh-viscosity refined cotton |
| CN102321926B (en) * | 2011-08-05 | 2013-10-30 | 四川北方硝化棉股份有限公司 | Production method of refined cotton |
| CN102877343A (en) * | 2012-09-20 | 2013-01-16 | 无锡市凯利药业有限公司 | Improved technology for producing refined cotton |
| CN103225114A (en) * | 2013-04-23 | 2013-07-31 | 杨金福 | Production process for purified cotton with high whiteness |
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